Adams' family filed a federal civil rights lawsuit against the City of Chicago and several police officers Thursday.

Early Monday, minutes after leaving work at the Chicago Police Department's 10th District, 32-year-old Officer Taylor Clark was killed when his Jeep struck a Nissan at West Roosevelt Road and South Kostner Avenue. Adams was in the Nissan, waiting to make a turn.

Chicago police officer Taylor Clark

Prior to the crash, the off-duty officer was pursued by an on-duty officer, who mistakenly thought he was involved in a carjacking. Surveillance video shows part of the pursuit.

Adams' relatives said the 27-year-old was looking forward to working at the Taste of Chicago as a security officer.

Chicago police have referred all questions about the incident to the city's Independent Police Review Authority, which has not commented on their investigation.